First stage diving regulator



FIG. 1 is a perspective view taken from the bottom, front and left sideof a first stage diving regulator showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a bottom plan view thereof; and

FIG. 6 is a cross sectional view taken on line 6--6 of FIG. 4.

The ornamental design for a first stage diving regulator, assubstantially shown.